Have a question about FENSA certificates? You'll likely find the answer on the Certificates page, where you can also find and order replacement certificates online.
If you're a customer of a FENSA Approved Installer or are currently planning to replace your windows or doors, you'll find helpful advice and tips on our Advice page.
Please contact your installer directly. If you need further help, first verify whether FENSA can assist by completing the 'If something goes wrong' widget on our Homeowners page.
For any certificate, installation, or other FENSA-related queries, homeowners and installers can contact FENSA either by filling out our online form or by calling the FENSA helpline at 020 7645 3700.
FENSA is a government-authorised scheme that monitors building regulation compliance for replacement windows and doors. Every FENSA Approved Installer, from large national brands to small local companies, is assessed regularly by us to ensure its standards are continually maintained.
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